McLaren to investigate Montoya's problems

The Colombian suffered from engine mapping issues that left him down on power compared to teammate Kimi Raikkonen when the engine was in certain modes - and that played a part in his disappointing start to the campaign.

McLaren F1 CEO Martin Whitmarsh has said the team are hoping that they get time this week to track down the problem and resolve it before the action gets underway in Malaysia on Friday.

"I think we had some issues over the weekend with Montoya's engine," explained Whitmarsh.

"We have a number of different modes of operation with the engine. We have economy, super economy and full mode and certainly in the lesser modes of control there was something in the engine that we were trying to track down all weekend that gave him a slight element of disadvantage.

"It's the same engine this weekend but we have got a bit more time to study it now. We cannot change the mechanics of the engine but we are allowed to change the software and the mapping.

"With a bit of detailed analysis maybe we can find something there to give him more confidence in the operating regimes of the engine."